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| Название (рус.): | Пластмассы. Сополимеры стирола и акрилонитрила. Определение содержания остаточного мономера акрилонитрила. Метод газовой хроматографии |
| Название (англ.): | Plastics - Styrene/acrylonitrile copolymers - Determination of residual acrylonitrile monomer content - Gas chromatography method |
| Описание (англ.): | The principle of the method specified is dissolving a test portion in dimethylformamide and injecting a small volume of the solution into a gas chromatograph equipped with flame ionization detector to separate and detect the volatile components. The solvent contains a known amount of propionitrile oracetonitrile as an internal standard for quantitative evaluation. With this method, a lower detection limit of the order of 3 ppm of acrylonitrile in the copolymer may be expected. To obtain a lower detection limit of the order of 0,3 ppm to 0,4 ppm, an alternative method is specified in annex A. |
| Заменяет стандарты: | ISO 4581(1987.12)*ISO/DIS 4581 DAM 1(1993.01) |
| Дата регистрации: | 01.08.94 |
| Дата введения: | 01.08.94 |
| Код КГС: | А29 |
| Код ОКСТУ: | 2240 |
| Код ОКС(МКС): | 83.080.20 |
| Код ОКП: | 2240 |
| Нормативные ссылки: | BS 2782 PART 4 METHOD 453C(1996/BSI), EQV ISO 2561-1974 |
| Ключевые слова: | ACRYLONITRILE CHEMICAL ANALYSIS AND TESTING COPOLYMERS DETERMINATION OF CONTENT GAS CHROMATOGRAPHY MONOMERS PLASTICS STYRENE TESTING CHEMICAL ANALYSIS AND TESTIN |
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